Vlad
G. Vlad and the Mountains
G. Vlad and the Mountains 题意:给你每个点的高度,从a到b需要消耗h[b]-h[a]的体力值(所以说下坡时体力值可以增加),询问一开始你有e的体力值,问是否可以从u->v点 分析: 1.a->b最终消耗的体力值一定为h[b]-h[a],如果一开始的体力值都达不到肯定无法过 ......
Codeforces Round 888 (Div. 3)G. Vlad and the Mountains(数据结构,图论)
题目链接:https://codeforces.com/contest/1851/problem/G 大致题意: 给出n个点m条边的无向图,每个点有点权h【i】。从点 i 到 点 j会消耗 h【j】 - h【i】 的能量,如果小于0,那么就是恢复对应绝对值的能量。 进行q次询问,每次询问包含起点s, ......
G. Vlad and the Mountains
G. Vlad and the Mountains Vlad decided to go on a trip to the mountains. He plans to move between $n$ mountains, some of which are connected by roads. ......